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"make -j2" hang is not fixed in current repository
- To: cygwin-developers at cygwin dot com
- Subject: "make -j2" hang is not fixed in current repository
- From: Jonathan Kamens <jik at curl dot com>
- Date: 31 Oct 2001 13:23:18 -0500
I suspect you don't want to hear this ;-(, but I just saw one of our
automated "make -j2" builds hang in the same fashion it always has in
the past, with a cygwin1.dll built from the current repository.
Here are the stacks of all the hung make processes. This is the
lowermost one:
Thread 4 (thread 116.0x113):
#0 0x77f762e9 in ?? ()
#1 0x77f04ede in ?? ()
Thread 3 (thread 116.0x10d):
#0 0x77f682cb in ?? ()
#1 0x77f1cd76 in ?? ()
#2 0x6105c115 in wait_subproc ()
at /u/jik/cygwin-cvs/src/winsup/cygwin/sigproc.cc:1243
#3 0x610052aa in thread_stub (arg=0x610a2a40)
at /u/jik/cygwin-cvs/src/winsup/cygwin/debug.cc:98
#4 0x77f04ede in ?? ()
Thread 2 (thread 116.0x126):
#0 0x77f682cb in ?? ()
#1 0x77f1cd76 in ?? ()
#2 0x6105bdb9 in wait_sig ()
at /u/jik/cygwin-cvs/src/winsup/cygwin/sigproc.cc:1128
#3 0x610052aa in thread_stub (arg=0x610a2a40)
at /u/jik/cygwin-cvs/src/winsup/cygwin/debug.cc:98
#4 0x77f04ede in ?? ()
Thread 1 (thread 116.0x6b):
#0 0x77f67a5b in ?? ()
#1 0x61053064 in peek_pipe (s=0x242f114, ignra=0, guard_mutex=0x1b4)
at /u/jik/cygwin-cvs/src/winsup/cygwin/select.cc:453
#2 0x61053416 in fhandler_pipe::ready_for_read (this=0x61545228, fd=6,
howlong=4294967295, ignra=0)
at /u/jik/cygwin-cvs/src/winsup/cygwin/select.cc:512
#3 0x61061e1b in _read (fd=6, ptr=0x242f223, len=1)
at /u/jik/cygwin-cvs/src/winsup/cygwin/syscalls.cc:315
#4 0x6108bbb6 in read (fd=6, buf=0x242f223, cnt=1)
at /u/jik/cygwin-cvs/src/newlib/libc/syscalls/sysread.c:15
#5 0x61011234 in sigdelayed ()
at /u/jik/cygwin-cvs/src/winsup/cygwin/exceptions.cc:1229
#6 0x402704 in _size_of_stack_reserve__ ()
#7 0x41ad27 in _size_of_stack_reserve__ ()
#8 0x41a1a1 in _size_of_stack_reserve__ ()
#9 0x418aba in _size_of_stack_reserve__ ()
#10 0x418710 in _size_of_stack_reserve__ ()
#11 0x410bdc in _size_of_stack_reserve__ ()
#12 0x610044fd in dll_crt0_1 ()
at /u/jik/cygwin-cvs/src/winsup/cygwin/dcrt0.cc:769
#13 0x610047d1 in _dll_crt0 ()
at /u/jik/cygwin-cvs/src/winsup/cygwin/dcrt0.cc:850
#14 0x61004810 in dll_crt0 (uptr=0x0)
at /u/jik/cygwin-cvs/src/winsup/cygwin/dcrt0.cc:862
#15 0x4254f7 in _size_of_stack_reserve__ ()
#16 0x40103d in _size_of_stack_reserve__ ()
#17 0x77f1b9ea in ?? ()
#0 0x77f762e9 in ?? ()
This is its parent, which has "I" in the first column of its ps
output (the others don't):
Thread 4 (thread 205.0xaf):
#0 0x77f762e9 in ?? ()
#1 0x77f04ede in ?? ()
Thread 3 (thread 205.0x107):
#0 0x77f682cb in ?? ()
#1 0x77f1cd76 in ?? ()
#2 0x6105c115 in wait_subproc ()
at /u/jik/cygwin-cvs/src/winsup/cygwin/sigproc.cc:1243
#3 0x610052aa in thread_stub (arg=0x610a2a40)
at /u/jik/cygwin-cvs/src/winsup/cygwin/debug.cc:98
#4 0x77f04ede in ?? ()
Thread 2 (thread 205.0xe8):
#0 0x77f682cb in ?? ()
#1 0x77f1cd76 in ?? ()
#2 0x6105bdb9 in wait_sig ()
at /u/jik/cygwin-cvs/src/winsup/cygwin/sigproc.cc:1128
#3 0x610052aa in thread_stub (arg=0x610a2a40)
at /u/jik/cygwin-cvs/src/winsup/cygwin/debug.cc:98
#4 0x77f04ede in ?? ()
Thread 1 (thread 205.0xfe):
#0 0x77f67f07 in ?? ()
#1 0x61012b6b in fhandler_base::raw_read (this=0x61545668, ptr=0x242ef23,
ulen=1) at /u/jik/cygwin-cvs/src/winsup/cygwin/fhandler.cc:231
#2 0x6101347c in fhandler_base::read (this=0x61545668, in_ptr=0x242ef23,
in_len=513) at /u/jik/cygwin-cvs/src/winsup/cygwin/fhandler.cc:484
#3 0x610440a7 in fhandler_pipe::read (this=0x61545668, in_ptr=0x0, in_len=513)
at /u/jik/cygwin-cvs/src/winsup/cygwin/pipe.cc:54
#4 0x61061f0e in _read (fd=6, ptr=0x242ef23, len=1)
at /u/jik/cygwin-cvs/src/winsup/cygwin/syscalls.cc:334
#5 0x6108bbb6 in read (fd=6, buf=0x242ef23, cnt=1)
at /u/jik/cygwin-cvs/src/newlib/libc/syscalls/sysread.c:15
#6 0x61011234 in sigdelayed ()
at /u/jik/cygwin-cvs/src/winsup/cygwin/exceptions.cc:1229
#7 0x402704 in _size_of_stack_reserve__ ()
#8 0x41ad27 in _size_of_stack_reserve__ ()
#9 0x41a1a1 in _size_of_stack_reserve__ ()
#10 0x418aba in _size_of_stack_reserve__ ()
#11 0x41a5ce in _size_of_stack_reserve__ ()
#12 0x4197fa in _size_of_stack_reserve__ ()
#13 0x418aba in _size_of_stack_reserve__ ()
#14 0x41a5ce in _size_of_stack_reserve__ ()
#15 0x4197fa in _size_of_stack_reserve__ ()
#16 0x418aba in _size_of_stack_reserve__ ()
#17 0x41a5ce in _size_of_stack_reserve__ ()
#18 0x4197fa in _size_of_stack_reserve__ ()
#19 0x418aba in _size_of_stack_reserve__ ()
#20 0x418710 in _size_of_stack_reserve__ ()
#21 0x411352 in _size_of_stack_reserve__ ()
#22 0x610044fd in dll_crt0_1 ()
at /u/jik/cygwin-cvs/src/winsup/cygwin/dcrt0.cc:769
#23 0x610047d1 in _dll_crt0 ()
at /u/jik/cygwin-cvs/src/winsup/cygwin/dcrt0.cc:850
#24 0x61004810 in dll_crt0 (uptr=0x0)
at /u/jik/cygwin-cvs/src/winsup/cygwin/dcrt0.cc:862
#25 0x4254f7 in _size_of_stack_reserve__ ()
#26 0x40103d in _size_of_stack_reserve__ ()
#27 0x77f1b9ea in ?? ()
#0 0x77f762e9 in ?? ()
And this is its parent, the top-most make process:
Thread 4 (thread 230.0xd1):
#0 0x77f762e9 in ?? ()
#1 0x77f04ede in ?? ()
Thread 3 (thread 230.0x12b):
#0 0x77f682cb in ?? ()
#1 0x77f1cd76 in ?? ()
#2 0x6105c115 in wait_subproc ()
at /u/jik/cygwin-cvs/src/winsup/cygwin/sigproc.cc:1243
#3 0x610052aa in thread_stub (arg=0x610a2a40)
at /u/jik/cygwin-cvs/src/winsup/cygwin/debug.cc:98
#4 0x77f04ede in ?? ()
Thread 2 (thread 230.0xe4):
#0 0x77f682cb in ?? ()
#1 0x77f1cd76 in ?? ()
#2 0x6105bdb9 in wait_sig ()
at /u/jik/cygwin-cvs/src/winsup/cygwin/sigproc.cc:1128
#3 0x610052aa in thread_stub (arg=0x610a2a40)
at /u/jik/cygwin-cvs/src/winsup/cygwin/debug.cc:98
#4 0x77f04ede in ?? ()
Thread 1 (thread 230.0x114):
#0 0x77f67a5b in ?? ()
#1 0x61053064 in peek_pipe (s=0x242e834, ignra=0, guard_mutex=0x200)
at /u/jik/cygwin-cvs/src/winsup/cygwin/select.cc:453
#2 0x61053416 in fhandler_pipe::ready_for_read (this=0x61543480, fd=6,
howlong=4294967295, ignra=0)
at /u/jik/cygwin-cvs/src/winsup/cygwin/select.cc:512
#3 0x61061e1b in _read (fd=6, ptr=0x242e943, len=1)
at /u/jik/cygwin-cvs/src/winsup/cygwin/syscalls.cc:315
#4 0x6108bbb6 in read (fd=6, buf=0x242e943, cnt=1)
at /u/jik/cygwin-cvs/src/newlib/libc/syscalls/sysread.c:15
#5 0x40d034 in _size_of_stack_reserve__ ()
#6 0x402704 in _size_of_stack_reserve__ ()
#7 0x41ad27 in _size_of_stack_reserve__ ()
#8 0x41a1a1 in _size_of_stack_reserve__ ()
#9 0x418aba in _size_of_stack_reserve__ ()
#10 0x41a5ce in _size_of_stack_reserve__ ()
#11 0x4197fa in _size_of_stack_reserve__ ()
#12 0x418aba in _size_of_stack_reserve__ ()
#13 0x41a5ce in _size_of_stack_reserve__ ()
#14 0x4197fa in _size_of_stack_reserve__ ()
#15 0x418aba in _size_of_stack_reserve__ ()
#16 0x41a5ce in _size_of_stack_reserve__ ()
#17 0x4197fa in _size_of_stack_reserve__ ()
#18 0x418aba in _size_of_stack_reserve__ ()
#19 0x41a5ce in _size_of_stack_reserve__ ()
#20 0x4197fa in _size_of_stack_reserve__ ()
#21 0x418aba in _size_of_stack_reserve__ ()
#22 0x41a5ce in _size_of_stack_reserve__ ()
#23 0x4197fa in _size_of_stack_reserve__ ()
#24 0x418aba in _size_of_stack_reserve__ ()
#25 0x41a5ce in _size_of_stack_reserve__ ()
#26 0x4197fa in _size_of_stack_reserve__ ()
#27 0x418aba in _size_of_stack_reserve__ ()
#28 0x41a5ce in _size_of_stack_reserve__ ()
#29 0x4197fa in _size_of_stack_reserve__ ()
#30 0x418aba in _size_of_stack_reserve__ ()
#31 0x41a5ce in _size_of_stack_reserve__ ()
#32 0x4197fa in _size_of_stack_reserve__ ()
#33 0x418aba in _size_of_stack_reserve__ ()
#34 0x41a5ce in _size_of_stack_reserve__ ()
#35 0x4197fa in _size_of_stack_reserve__ ()
#36 0x418aba in _size_of_stack_reserve__ ()
#37 0x418710 in _size_of_stack_reserve__ ()
#38 0x411352 in _size_of_stack_reserve__ ()
#39 0x610044fd in dll_crt0_1 ()
at /u/jik/cygwin-cvs/src/winsup/cygwin/dcrt0.cc:769
#40 0x610047d1 in _dll_crt0 ()
at /u/jik/cygwin-cvs/src/winsup/cygwin/dcrt0.cc:850
#41 0x61004810 in dll_crt0 (uptr=0x0)
at /u/jik/cygwin-cvs/src/winsup/cygwin/dcrt0.cc:862
#42 0x4254f7 in _size_of_stack_reserve__ ()
#43 0x40103d in _size_of_stack_reserve__ ()
#44 0x77f1b9ea in ?? ()
#0 0x77f762e9 in ?? ()
Note that I never got far enough in my testing to confirm that the bug
was fixed right when cgf first said he'd checked in a fix; this is the
first time I've really done extensive testing. This makes me suspect
that perhaps the bug *was* fixed then, especially since cgf managed to
duplicate the problem before the fix and couldn't duplicate it
afterwards, but somehow got "unfixed" in the meantime.
What information can I extract from these hung processes that will
help determine what's going on?
Thanks,
jik